Ulefone Note 21 vs Xiaomi 15T
Ulefone
Note 21
Xiaomi
15T
At a glance
- Brand
- Ulefone
- Xiaomi
- Release date
- January 2025, 1 years 5 months ago
- September 2025, 9 months ago
- AnTuTu
- 251.000 Antutu v10 Overall performance better than 59% of devices
- 1.821.344 Antutu v10 Overall performance better than 93% of devices
- Launch price
- —
- € 649.99 ($ 760.99)
Display
- Size
- 6.56"
- 6.83"
- Resolution
- 720 x 1612 px HD+
- 1280 x 2772 px UHD
- Type
- LCD IPS
- AMOLED
- Density
- 269 ppi Medium Density
- 447 ppi Very high density
- Aspect ratio
- 20:9
- 19.5:9
- Features
- Water Drop Notch, Refresh rate 90 Hz, Brightnes 450 cd/m² (typ), 2.5D curved glass screen, Capacitive, Multi-touch, Frameless
- Hole-punch Notch, SGS Certified, Eye Care Display, TÜV Rheinland Flicker-free Certified, TÜV Low Blue Light, 3840 Hz PWM, Refresh rate 120 Hz, Touch sampling rate 240 Hz, Touch sampling rate 480 Hz, Max brightness HBM - 1800 cd/m², Peak brightness - 3200 cd/m², 5000000:1 contrast ratio, Always-On Display, TÜV Rheinland Eye Comfort Certification, HDR10+, DCI-P3, DC dimming, 12 Bits panel, Dolby Vision, Scratch resistant, Corning Gorilla Glass 7i, Capacitive, Multi-touch, Frameless
Performance
- Chipset
- Unisoc Tiger T606
- MediaTek Dimensity 8400
- CPU
- 2x1.6 GHz Cortex A75 + 6x1.6 GHz Cortex A55
- 1x3,25 GHz Cortex A725 + 3x3.0 GHz Cortex A725 + 4x2.1GHz Cortex A725
- CPU type
- Octa-Core
- Octa-Core
- Process
- 12 nm
- 4 nm
- Frequency
- 1.6 GHz
- 3.25 GHz
- GPU
- ARM Mali-G57
- Immortalis G720 MC7 1.3GHz GPU
- RAM
- 4 GB
- 12 GB
- RAM type
- LPDDR4X RAM
- RAM LPDDR5X
- 64-bit
- Yes
- Yes
Rear camera
- Resolution
- 13 Mpx
- 50 Mpx
- Aperture
- ƒ/ 2.2
- ƒ/ 1.7
- Sensor
- Samsung S5K3L6
- Omnivision OV50 Light Fusion 800
- Pixel size
- 1.12 µm
- 1.00 µm
- Sensor size
- 1/3.1"
- 1/1.55"
- Flash
- LED
- LED
- Optical stabilization
- No
- Yes
- Slow motion
- No, 30 fps
- Yes, 960 fps
- Features
- Digital zoom, Dual camera, Digital image stabilization, Autofocus, Touch focus, Continuous shooting, Geotagging, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer
- Tracking AF, Flicker sensor, Noise reduction, Time-Lapse, 4K Video, Digital zoom, Optical zoom, Triple camera, Digital image stabilization, Optical Stabilization (OIS), Ultra stable video, Autofocus, Touch focus, Continuous autofocus, Manual focus, Laser AF, Phase detection autofocus (PDAF), Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer, RAW, Night Mode
Front camera
- Resolution
- 8 Mpx
- 32 Mpx
- Aperture
- Unknow
- ƒ/ 2.2
- Sensor
- —
- Samsung S5KKDS
- Pixel size
- —
- 0.70 µm
Battery
- Capacity
- 5000 mAh
- 5500 mAh
- Type
- Li-Polymer
- Li-Ion Polymer
- Fast charge
- Yes , 10.0W
- Yes , 67.0W
- Charge cycles
- 1000 cycles
- 1600 cycles
- Runtime
- ~ 47h
- ~ 58h
- Features
- Non-removable
- Bypass Charging, Non-removable
Storage
- Capacity
- 128 GB
- 256 GB
- SD slot
- Yes , Slot for SD or second SIM card
- No
- Type
- —
- UFS Storage 4.1
Body
- Dimensions
- 75.2 mm 163.2 mm 9.2 mm Print 3D Model
- 78.0 mm 163.2 mm 7.5 mm Print 3D Model
- Weight
- 196 g
- 194 g
- Materials
- Plastic
- Aluminium alloy
- Colors
- Black Violet
- Black Gold Silver
- Drop resistance
- Class A B C D E 113 drops without defects
- Class A B C D E 270 drops without defects
- Repairability
- Class A B C D E
- Class A B C D E
- Usable surface
- 84 %
- 89 %
- Water/dust resistance
- —
- IP68
Software
- Operating system
- Android 14 Upside-down cake Android 14
- Android 15 HyperOS 2.X (Android 15)
- Google services
- With Google Mobile Services
- With Google Mobile Services
- Updates
- —
- OS updates: 5 years, Security updates: 5 years
Connectivity
- SIM
- Dual SIM Dual Standby (Nano SIM + Nano SIM)
- Dual SIM Dual Standby (Nano SIM / eSIM + Nano SIM / eSIM)
- Bluetooth
- Bluetooth 5.0 LELow energy consumption
- Bluetooth 6.0 LELow energy consumption
- Bluetooth profiles
- A2DP (Advanced Audio Distribution Profile), HID (Human Interface Profile), LE (Low Energy)
- A2DP (Advanced Audio Distribution Profile), LE (Low Energy), APT-x, LDAC, SBC, AAC
- Wi-Fi
- 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac
- 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac, WiFi 6 (802.11ax) , WiFi 6E
- Wi-Fi features
- Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display
- Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, Wi-Fi MiMO
- USB
- USB Type-C
- USB Type-C
- USB features
- Charging, OTG
- Charging, OTG
- Navigation
- GPS, A-GPS, GLONASS, Beidou, Galileo
- A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC System, QZSS (L1 + L5), Galileo (E1+E5a+E5b)
Networks
- 4G LTE
- B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B17 (700), B19 (800), B20 (800), B26 (850), B28b (700), B28a (700), B38 (TDD 2600), B40 (TDD 2300), B41 (TDD 2500), B66 (1700/2100)
- B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B13 (700), B17 (700), B18 (800), B19 (800), B20 (800), B26 (850), B28b (700), B28a (700), B32 (1500), B38 (TDD 2600), B40 (TDD 2300), B41 (TDD 2500), B42 (TDD 3500), B48 (TDD 3600), B66 (1700/2100), B71 (600)
- 3G
- B1 (2100), B2 (1900), B5 (850), B8 (900)
- B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
- 2G
- B2 (1900), B3 (1800), B5 (850), B8 (900)
- B2 (1900), B3 (1800), B5 (850), B8 (900)
- 5G
- —
- n1 (2100), n2 (1900 PCS), n3 (1800), n5 (850), n7 (2600), n8 (900), n12 (700), n26 (850), n28b (700), n28a (700), n38 (2600), n40 (2300), n41 (2500), n48 (3500), n66 (1700), n71 (600), n75 (1500), n77 (3700), n78 (3500)
Sensors & security
- Fingerprint
- Yes, on the side
- Yes, in screen
- Accelerometer
- Yes
- Yes
- Proximity
- Yes
- —
- Light sensor
- Yes
- Yes
- Cooling system
- No
- Yes
- Gyroscope
- —
- Yes
- Audio
- —
- Dolby Atmos, Stereo Speakers, 3 microphones
